Inter-cell power control for interference management

Details Inter-cell power control for interference management Inter-cell power control for interference management

H - Electricity

04

B

H04B 7/005 (2006.01)

Patent

CA 2666215

A system and method for inter-cell power control for interference management in an OFDM system is provided. The system provides for a combination use of open loop and closed loop PSD control algorithms. The open loop control is a function of path loss from the serving cell as well as the neighboring cells. The closed loop control updates the end node transmit PSD by listening to the load indicators from the serving cell and at least one other neighboring non-serving cell which generates the highest level of interference. The system thus provides a fast and tight control with multi-cell information that allows improved inter-cell interference control.

L'invention concerne un système et un procédé de commande de puissance entre des cellules pour la gestion de brouillage dans un système OFDM. Le système de l'invention propose une utilisation combinée d'algorithme de commande PSD en boucle ouverte et en boucle fermée. La commande en boucle ouverte est une fonction d'affaiblissement de trajet de la cellule de desserte et des cellules voisines. La commande en boucle fermée met à jour le PSD de transmission du noeud d'extrémité par écoute des indicateurs de charge de la cellule de desserte et d'au moins une autre cellule voisine sans desserte qui génère le niveau de brouillage le plus élevé. Le système propose ainsi une commande rapide et poussée avec des informations sur plusieurs cellules permettant un contrôle de brouillage amélioré entre des cellules.

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